Collector-ring.



J. B. NOEGGERATH.

COLLECTOR RING.

Patented Apr. 27, 1909.

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919,626. Patented Apr. 27, 1909.

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-UfNi EDi [STATE JAKOB NOEGGERATH, or soHENEcTADY NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION on NEW YORK. V

GOLLE CTOR-RING.

' Application filed November To all whom 'it may concern:

Specification of Letters Patent.

Patented April '27; 1909." 26, 1907. Serial No 403,853.

'Simila-r reference numerals will be used 1 Be it known that I, JA-KOB E. N OEGGERATH, g throughout the specification and the several a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Collector-Rings, of which the'following is e specification.

My invention relates to collector-rings for dynamo-electric .inaehines and has for its object a novel construction which isparticularly adapted to allow for expansion due 5 to the heating of the rings, and to allow the assembly of the rings with key-plates.

"Myinvention may be used to great ad vantage in connection with large acyclic generators, which must necessarily run at high speeds and conse uently the collector rings must always=be eldiirmly in place, especially against lateral movement. To accomplish this'en'd, I have so constructed and mounted the. collector-rings that they are elastic, in that they may be compressed in a direction, parallel to the axis of'thc shell, on which they are mounted and will return to their former shape whenthe compression is released, :When thus arranged expansion ofthe rings does not produce undue strains 'on the means for retaining them on the shell and they .will return to; their original shape when thetem )eroture is reduced.

.Althouglrl have illustrated my invention as-i npplicnble. to acyclic machines, I do not wish to limitunyself thereto, as it may be used on any-machine having collector-rings. The various features of novelty which characterize myzinvention are pointed out with particularity in theclaims annexed to 'nnd Forming a part of this specification, but torn hotter undcrstamling oh my invention reference may he had to the description taken in connection with the accompanying drawing, in which- Figure, 1 shows a side view of one half of the rotary member-ofnil-acyclic generator 45Jn'ovided with my invention,- with. parts n-oken away, and'in section on line 1--1 of Fig. 2; Fig. 2.-shows,an end View of the retorwith pnrtshrokcn away and in section 'an lino'2- o2oli Fig. 1; Fig. Ills a detail section of my collcctor-rings; Fig. 4 is a View similar to Fig. 3, the parts having been-ex )andcd by heat; Fig, 5 and. ii are similar to *igs. 3 end 4, respect ely, showing a modified form of my collector-ring, and l ig. 7 shows a further modification of my collector ring.

figures of the drawing to denote like parts, F 3 is the nrmature spider on which is mountedthe collector shell 4. The collector-rings consist preferably of rings 5 mounted on feet 6, which are surrounded by mica or other suitable insulation 7. The feet nreequally spaced about the periphery of the shell and rest on the steel shoes 10.v These steel shoes protect the mica insulation 7 from injury, 5 especially when the collector rings are'bein assembled on the collector shell 4. A wil benoticed in 2, these shoes are slightly turned up atthc ends to keep them in place, by the engagement of these up-turnedportions with the collector ring feet 6.

The rings are rofcrnhLY made of-stccl'and are shrunk out 19 collector shell. The =fcet oh the first ring put. on abut ngninstathe flange 1? ol theshcll, but arc insulated feet in close contactseparated onlyhy their insulation, und when in plnceon the-shell; are compressed .in any; manner= whatsoever. The reason for compressing them, and one way of compressing the rings will he herein: after explained; When compressed, one way of retaining them in place is to .pntthc brass ring 9 and the steel-ring S on thcshell, i and then the kcyplates 11min the slots compression is then, partially released, a the rings 8 and 9, together with the key plates 11,- holding thecollcctor rings i i place and taking up ps -rt oithe compression The collector-rings are all drilled withholcs, and two conductors arc-tapped into, eachring in the construction shown. One such conductor is shown a? 12.. The conductors are not placed :in po tion until tl1c,.,( ollcctor shell. isTplaccd on :ihenrnuiturcspider, and

holes and tightened up, thereby, compressing the rings sufiiciently to puttllc key plates 11 therefrom. The rest oi the rings have-their turned in'the shell to receive-;them. The

consequently bolts may he placedin these shell, while in Fig. 4 the rings are shown as having the side portions pressing together throughout their width, as when the rings are expanded by heat, or compressed in the 5 course of assembling them on the shell.

In Figs. 5 and 6 the rings are shown as fastened to the feet 6 in the same way as in Fi s. 3 and 4, These feet 6, however, are ho low, and the elastic side portions 18, as 10 seen in Fig. 5, press against each other near the collector shell in their normal osition. These side portions have flanges w iich rest in the shoes and are separated from each other by the s ace 15. Fig. 6 corresponds with Fig. 4 an shows the rings compressed as in assembling, or as expanded by heat. When the rings expand laterally because of the heat generated by the current carried by them and .the friction and other losses of the brushes bearing on the rings, the space, due to the taper o he side portions, is filled up by the expanding meta and the rings are thus kept tightly in place without exerting any additional strain on the key plate 11. Figs. 3 and 5 both show the taper of the side portions exaggerated for the sake of the clearness of the drawing, and it has been found expedient to use a smaller ta er in commercial machines of a great nuin er of I'm s.

Ihe feet of the collector rings may be made integraltherewith, and in Fig. 7 I have shown a single ring like that shown in Figs. 1 to 4, except that the feet 6 are made integral 35, with themain portion 5 of the collector ring.

Moreover, I do not desire to limit myseiftc y since changes which do not depart from the s irit of my invention may be made by those 40 s (illed in the art.

What I claim as new and desire to secure by Letters Patent of the United States, is,-

1. In a dynamo-electric machine, a collector shell, collector-rings mounted on said shell but insulated therefrom,said collectorrings having portions which are elastic in the direction of the axis of the shell, and means for retaining the collector-rings on said shell comprising a member engaging said elastic portion.

\2. In a dynamo-electric machine, a collector shell having a flange, collector-rings mounted on said shell but insulated therefrom, said collector-rings having portions which are elastic in the direction of the axis of the shell, and means comprising keyplates and a member engaging said elastic portion for holding said collector-rings be? tween said flange and said member.

3. In a dynamo-electric machine, a collector shell, collector-rings mounted on said shell but'insulated therefrom, said collectorrings having portions which are elastic in the direction of the axis of the shell, and

means for holding said collecto'rrings in posiof the constructions herein described,

ti'on on said shell including a ring engaging said elastic portion and key-plates abutting against said ring.

4. In a dynamo-electric machine, a collector shell having a flange, collector-rings mounted on said shell but insulated therefrom, said collector-rings having portions which are elastic in the direction of the axis of the shell, and means including a ring engaging said elastic portion and key-plates abutting against said ring for holding said collector-rings between said flange and said ring.

'5. In a dynamo-electric machine, collector-rings having elastic supporting portions, said elastic portions of adjacent rings being in contact with each other, so that the rings may expand or be compressed and may re turn to their former shape.

6. In a dynamo-electric machine, a collector" shell, collector-rings mounted thereon, feet for said collector=rings having elastic tapering side-portions, insulation surrounding said feet, and shoes between said feet and said shell, substantially as described.

7. In a dynamo-electric machine, a collector-ring having feet, said feet having elastic tapering side portions.

8. In a dynamo-electric machine, a collector-ring having feet substantially equidistantly spaced, said feet having elastic tapering side portions.

9. In a dynamo-electric machine, a collec tor-ring consisting of a ring and feet, said feet having elastic tapering side ortions and rojections, said ring having a s 0t, said pro- 3ections. fittingsaid slot, and means for fastening said ring and said feet together.

10. In a dynamo-electric machine, a collector-ring consisting of a ring and feet, said feet having elastic tapering side )ortions and projections, said ring having a s 0t, and rivets fastening said projections in said slot.

' 11. In a dynamo-electric machine, a collector shell, collector-rings mounted thereon and consisting of rings and feet, said feet being fastened to said rings and having elastic tapering side portions.

12. In a dynamo-electric machine, a collector shell, collector-rings mounted thereon, and consisting of rings and feet, said feet being fastened to said rings and having elastic tapering side portions, the said taper being toward the collectorring, substantially as described. 4 p

13. In a dynamo-electric machine, a collector shell, collector-rings mounted thereon consisting of rings and feet, said feet having elastic tapering side portions and insulation surrounding the feet, the said side portions of adjacent collector-rings when cold pressing against each other only at the end away from the collector shell.

14. In a dynamo-electric machine, a ring 5 and feet 6 for said ring, said fecthaving pro- .side' portions,

18, substantially as descri j 15. In-a dynamo-electric machine, a col lector shell,'co,llector rings mounted on said 'shell, said "collector rings having feet, said feet having elastic tapering side portions, in-

sulation'surroundin'g said feet, and means for i'etainin'g the collector'ring's on said shellcomprising a meinber engaging the feet of said collector rings. l 16. In a dynamo-electric machine, a collector shell having a flange, collector fing mnounted-on said shell, said collector 'ring having feet, said feet-having elastic tapering Y insulation surrounding said feet, and' n'eans' comprising a key a nemljer'cngagmg said feet for liOEZl late and ing said wmember. 1-7. In a dynamo-electric machine, a colmounted on said shell, said collector rings having feet, said feet having elasticltapcnng side portlons, insulation surrounding said and means for' holding. said collector rings 'plate anda meinberengaging said feet. s s, my hand this 25th day of November, 1907. JAKOB'E. NOEGGERATH; Witnesses:l U

' BENJAMIN 'BqHULL, I E LE N ORFORDL feet, shoes between said feet and said shell,

in position. on said shell comprising a key- In. witness whereo f,.1 have hereiinto set collector rings between said flange and said I lector shell having a flange, collector rings; 

